"Green groups said on Saturday they would give the Environmental Protection Agency more time to forge the first-ever plan to regulate carbon dioxide from power plants, the country's single biggest source of greenhouse gases."

Having previously declared his acceptance of the scientific consensus that human emissions are causing climate change, Mitt Romney finally joined the Republican consensus that science is wrong.

"House Democratic leaders asked their members yesterday to pledge in writing to vote 'no' on spending bills that contain controversial policy riders, warning that by bringing such legislation to the floor Republicans would be courting a government shutdown."

"The top U.S. environmental regulator on Thursday said her agency would soon comment on the proposed $7 billion Canada-to-Texas Keystone XL oil sands pipeline, adding she was concerned about emissions and potential leaks that could result from the project."

"Lawmakers have called on the State Department’s inspector general to investigate the department’s handling of a crucial environmental study on the proposed Keystone XL pipeline and urged President Obama to delay a decision on the project until the report is completed."

"Three environmental groups sued the U.S. government on Tuesday, challenging claims in a State Department report that said a proposed Canada-to-Texas oil sands pipeline poses little risk to endangered species because spills on the line were unlikely."

"Nebraska Nebraska Gov. Dave Heineman has called the Legislature into special session next week to address growing concerns over the proposed Keystone XL pipeline. The pipeline would carry tar sands oil across one of the Midwest's most important aquifers.

The action throws a potentially significant new stumbling block into a Canadian company's hope of winning approval before the end of the year for the 1,700-mile pipeline, which would move diluted bitumen -- often heavy in sulfur, nickel and lead -- from Alberta to the Texas coast.

"WASHINGTON -- A former Energy Department official linked to the failed Solyndra solar enterprise deal continues to raise campaign money for President Obama and helped plan a fundraising luncheon that the president will attend in San Francisco on Tuesday."

"President Obama's reelection campaign has hired a former lobbyist for the controversial Keystone XL oil pipeline as a top adviser."